S-91253A471 10-32 x 3 1/2" ASME B18.3 Alloy Steel Hex Drive Flat Head Screws
Alloy Steel Hex Drive Flat Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional tensile strength of 130,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance from the black-oxide finish on alloy steel extends service life in demanding industrial environments.
- Precise Class 3A thread fit guarantees tight, secure connections with minimal backlash for vibration-resistant assemblies.
- Hex drive design allows for high-torque installation and easy removal with standard tools, speeding up maintenance and assembly.
- Partially threaded shank provides optimal grip and clamping force where needed, preventing material damage in precision applications.
- Compliance with ASME B18.3 and ASTM F835 ensures consistent quality and interchangeability, reducing procurement risks.
- RoHS 3 and REACH compliance supports environmentally responsible sourcing and use in regulated industries.
Professional Applications & Engineering Value
This 10-32 UNF flat head screw is engineered to address critical challenges in industrial fastening, where vibration resistance, material integrity, and precise fit are paramount. The black-oxide alloy steel construction offers enhanced durability against wear and environmental exposure, making it ideal for machinery, automotive, and heavy equipment applications. With a fine thread spacing and Class 3A thread fit, it ensures secure, leak-proof connections in assemblies requiring high clamping force. The flat head with hex drive facilitates flush mounting and easy access in confined spaces, reducing installation time and improving overall structural reliability. These features make it a trusted choice for engineers seeking long-term performance in precision applications.
Specification Summary & Compliance
This screw adheres to Class 3A thread fit for precise dimensional accuracy, with UNF fine threads and a minimum thread length of 7/8". It is manufactured in compliance with ASME B18.3 and ASTM F835 standards, ensuring consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use.
